Indirect acoustic transfer control of noise
First Claim
1. An automotive vehicle, comprising:
- a chassis defining an engine compartment and a longitudinally spaced passenger compartment;
an engine mounted in said engine compartment and being operable to generate noise energy;
a transverse box-like structure interposed between said engine compartment and said passenger compartment within the transfer path of the noise energy being transmitted from said engine to said passenger compartment; and
a noise control system placed within said box-like structure to control the transfer of said noise energy into said passenger compartment.
1 Assignment
0 Petitions
Accused Products
Abstract
A noise control system is directed to the path along which the noise is transmitted from the source of the noise being generated to the receiver of the noise in the passenger compartment of an automotive vehicle. The noise control system is deployed in a box structure, such as the dual bulkhead of the dashboard of the vehicle, to provide a constrained volume within which engine noise can be controlled. The dual bulkhead plenum houses an active noise control apparatus, such as a speaker or a vibrating device, between the bulkheads to be operable with a control algorithm to generate sound that can control the noise or vibrations generated by the engine. The plenum can also be treated with passive noise control materials, such as viscoelastic damping materials, acoustical foam or heavy vinyl barrier and foam to block airborne sound and vibrations, in addition to the active noise control.
24 Citations
20 Claims
-
1. An automotive vehicle, comprising:
-
a chassis defining an engine compartment and a longitudinally spaced passenger compartment; an engine mounted in said engine compartment and being operable to generate noise energy; a transverse box-like structure interposed between said engine compartment and said passenger compartment within the transfer path of the noise energy being transmitted from said engine to said passenger compartment; and a noise control system placed within said box-like structure to control the transfer of said noise energy into said passenger compartment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A noise control system operable with a noise generating apparatus producing noise energy and a receiver located remotely from the noise generating apparatus to receive said noise energy, comprising:
-
a box-like structure located along a transfer path extending between said noise generating apparatus and said receiver; a counter energy generating device mounted within said box-like structure; and a controller operable to receive a signal from said at least one sensor, develop a noise control signal and send said noise control signal to said at least one counter energy generating device to create a counter noise energy. - View Dependent Claims (11, 12, 13, 14)
-
-
15. A method of controlling a transmission of noise energy from a noise generating apparatus producing generated noise energy and a remote receiver positioned to receive said generated noise energy, comprising the steps of:
-
intercepting said generated noise energy along a transfer path extending between said noise generating apparatus and said receiver; mounting a counter energy generating device along said transfer path; creating a counter noise energy by said counter energy generating device to counteract said generated noise energy along said transfer path. - View Dependent Claims (16, 17, 18, 19, 20)
-
Specification